#include <stdio.h>
#define MAXLINE 1000 /* maximum input line length */

int _getline(char line[], int maxline);
void copy(char to[], char from[]);

/* print the longest input line */
int main()
{
    int len;    /* current line length */
    int max;    /* maximum length seen so far */
    char line[MAXLINE]; /* current inpu lien */
    char longest[MAXLINE];  /* longest line saved here */

    max = 0;
    while ((len = _getline(line, MAXLINE)) > 0)
        if (len > max) {
            max = len;
            copy(longest, line);
        }
    if (max > 0)    /* there was lien */
        printf("%s", longest);
    return 0;
}

/* getline: read a line into s, return length */
int _getline(char s[], int lim)
{
    int c, i;
    for (i=0; i < lim -1 &(c=getchar())!=EOF &c!='\n'; ++i)
        s[i] = c;
    if (c == '\n') {
        s[i] = c;
        ++i;
    }
    s[i] = '\0';
    return i;
}

/* copy: copy 'from' into 'to'; assume to is big enough */
void copy(char to[], char from[])
{
    int i;

    i = 0;
    while ((to[i] = from[i]) != '\0')
        ++i;
}